|
The method you're using is correct for adjusting your die to not crimp while seating. A sized case in the shellholder, raise the ram up, turn your die in until it just touches the case neck, screw it out approx. 1/8 turn, lock the die body down tight with a wrench, then seat a bullet by turning in the seating stem until the bullet is at the desired depth. Trying to drill out the crimp portion would only ruin the seating die especially if later you need to crimp some rounds. My guess is that the bullets themselves vary a few thousandths of an inch. Bullet tips whether lead tipped or plastic tipped vary in shape. A slightly rounded tip of lead or plastic will measure slightly shorter than a sharply pointed tip. Just use the same amount of force on the press handle when it bottoms out and the overall length won't be effected. The ogive of the seated bullets are probably very close. Hollowpoint bullets have uneven tips too and will vary if you measure with the caliper over the tip. Having the seating die bottom out on the shellholder won't help anything as far as getting the exact overall lengths when measured from bullet tip to base for the reason above. Do a google search for "bullet ogive" and read a couple articles and you'll see what ogives are and how to measure length of seated bullets plus tools to measure.
|